Command Line: Disallow combinations of some options. for instance, using -t in -a 0 mode

docs/changes.txt

@@ -70,6 +70,7 @@
 - Backend Info: Added local memory size to output
 - Backend: with kernel build options, switch from -I to -D INCLUDE_PATH, in order to support Apple Metal runtime
 - CUDA Backend: moved functions to ext_cuda.c/ext_nvrtc.c and includes to ext_cuda.h/ext_nvrtc.h
+- Command Line: Disallow combinations of some options. for instance, using -t in -a 0 mode
 - Hardware Monitor: Add support for GPU device utilization readings using iokit on Apple Silicon (OpenCL and Metal)
 - Hash Info: show more information (Updated Hash-Format. Added Autodetect, Self-Test, Potfile and Plaintext encoding)
 - HIP Backend: moved functions to ext_hip.c/ext_hiprtc.c and includes to ext_hip.h/ext_hiprtc.h

src/user_options.c

@@ -1294,6 +1294,16 @@ int user_options_sanity (hashcat_ctx_t *hashcat_ctx)
     }
   }
 
+  if (user_options->markov_threshold != 0) // is 0 by default
+  {
+    if ((user_options->attack_mode == ATTACK_MODE_STRAIGHT) || (user_options->attack_mode == ATTACK_MODE_COMBI) || (user_options->attack_mode == ATTACK_MODE_ASSOCIATION))
+    {
+      event_log_error (hashcat_ctx, "Option --markov-threshold is not allowed in combination with --attack mode %d", user_options->attack_mode);
+
+      return -1;
+    }
+  }
+
   if (user_options->restore_file_path != NULL)
   {
     if (strlen (user_options->restore_file_path) == 0)